fmod

(PHP 4 >= 4.2.0, PHP 5)

fmod — Returns the floating point remainder (modulo) of the division
of the arguments

Description

floatfmod
( float$x
, float$y
)

Returns the floating point remainder of dividing the dividend
(x) by the divisor (y).
The reminder (r) is defined as: x = i * y + r, for
some integer i. If y is
non-zero, r has the same sign as
x and a magnitude less than the magnitude of
y.